2158839

Information

• Patent Grant
• 2158839

• References
• Source

• Patent Number

  2,158,839

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1939
  86 years ago

• CPC

  • G01F3/222 - characterised by drive mechanism for valves or membrane index mechanism
  • G01F3/22 - for gases

• US Classifications

  • 073 - Measuring and testing
  • 277 - Seal for a joint or juncture